1) As you can see, after installing version 1.5.0.63, there is no DiskTree tab.

If you are getting the trial expired message, then that's normal. If not, then you are, probably, using a bad cracked version.

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2) The charset dropdown list is using bold fonts. What font should be in there and what encoding?

I've now made some changes, for possible causes for that problem, but I don't see it happening here. For Eastern Europe languages, you should have in that charset option the EasternEurope_Charset or Default_Charset. But it is set automatically, when you select the interface language.

I don't care if you are using a cracked version or not, but please don't make me stupid.If you want to be proactive and talk about the program, that's great. If not, I have more interesting things to do.